drm: Atomic modeset ioctl
The atomic modeset ioctl can be used to push any number of new values
for object properties. The driver can then check the full device
configuration as single unit, and try to apply the changes atomically.
The ioctl simply takes a list of object IDs and property IDs and their
values.
Originally based on a patch from Ville Syrjälä, although it has mutated
(mutilated?) enough since then that you probably shouldn't blame it on
him ;-)
The atomic support is hidden behind the DRM_CLIENT_CAP_ATOMIC cap (to
protect legacy userspace) and drm.atomic module param (for now).
v2: Check for file_priv->atomic to make sure we only allow userspace
in-the-know to use atomic.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index fc4767f..1dcfb685 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -902,7 +902,7 @@
/**
* struct struct drm_atomic_state - the global state object for atomic updates
* @dev: parent DRM device
- * @flags: state flags like async update
+ * @allow_modeset: allow full modeset
* @planes: pointer to array of plane pointers
* @plane_states: pointer to array of plane states pointers
* @crtcs: pointer to array of CRTC pointers
@@ -914,7 +914,7 @@
*/
struct drm_atomic_state {
struct drm_device *dev;
- uint32_t flags;
+ bool allow_modeset : 1;
struct drm_plane **planes;
struct drm_plane_state **plane_states;
struct drm_crtc **crtcs;
@@ -1346,6 +1346,10 @@
extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
+extern bool drm_property_change_valid_get(struct drm_property *property,
+ uint64_t value, struct drm_mode_object **ref);
+extern void drm_property_change_valid_put(struct drm_property *property,
+ struct drm_mode_object *ref);
extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
@@ -1437,6 +1441,8 @@
extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
struct drm_property *property,
uint64_t value);
+extern int drm_mode_atomic_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
int *bpp);